You could do this in SQL, as follows:
SELECT db_IACS.count as PulledOut_Count, db_IACS.Grams AS PulledOut_Grams, db_IACS.Principle AS PulledOut_Principle,
remclass1.count as remclass1_Count, remclass1.Grams AS remclass1_Grams, remclass1.Principle AS remclass1_Principle
FROM db_AICS
LEFT OUTER JOIN remclass1 ON db_IACS.Id = remclass1.Id
Then just deal with everything in the one dataset.